S4, E25: The team is on the case when human remains are found inside a barrel of wine during a wine tasting. When the victim turns out to be a wine critic whose scathing reviews were capable of sending a vineyard to its ruin, everyone from the winery's owner to the victim's own wife becomes a suspect. Meanwhile, Brennan decides she wants to have a baby and surprises Booth with the request to father her child. The unexpected request dredges up a host of unspoken feelings and unresolved issues between the two of them, and Booth becomes consumed by the prospect of having another child. The stress of the situation, coupled with Booth's undiagnosed health issue, paves the way for a surprise visit from Stewie Griffin (guest voice Seth MacFarlane), FAMILY GUY's diabolically clever baby who offers Booth advice in his inimitable style.